Acid-feeder for soda-water apparatus



(No Model.)

- J. ORMBROD.

ACID FEEDER FOB. SODA WATER APPARATUS.

l r v M ark} MW M .K L X. M N w m w I UNITED STATES PATENT OF ICE.

JOHN ORMEROD, OF BROOKLYN, NEW YORK, ASSIGNOR TO THE AMERICAN SODAFOUNTAIN COMPANY, OF NEW JERSEY.

ACID-FEEDER FOR SODA-WATER APPARATUS.

SPECIFICATION forming part of Letters Patent No. 484,604, dated October18, 1892.

Application filed August 1891. Serial No. 401,776. (No model.)

To all whom it may concern.-

Be it known that I, JOHN ORMEROD, a citizen of the United States,residing at Brooklyn, in the county of Kings and State of New York,

5 have invented a certain new and useful Improvement in Acid-Feeders forSoda-Water Apparatus, of which the following is a specification.

My invention relates to anautomatic acidfeeder for use in themanufacture of soda-water and similar aerated waters. It comprises asiphon arranged between an acid-chamber and a generator, which siphon isprovided with a check-valve opening automatically to 1'5 permit acid toflow from the acid-chamber to the generator when the pressure in theacidchamber exceeds the pressure in the generator and closingautomatically to cut off the acid-feed when the pressure in thegenerator equals or exceeds the pressure in the acidchamber, thepressure in the latter being obtained when the apparatus is started towork from any suitable source of supplyas, for instance, the gas-coolerthrough a pipe con- 2 5 trolled by a cock leading from such source ofsupply to the acid-chamber.

The object of the invention,it will be seen, is to automatically controlthe supply of acid from the acid-chamber to the generator, wherebyaconstant working-pressure is maintained in the generator, and henceexcessive and irregular strains and dangers from explosion are avoided.

In the accompanying drawings, forming a 5 part of thisspecification,Figure 1 represents a sectional elevation of an apparatusembodying my invention. Fig. 2 shows an enlarged vertical section of thecheck-valve heretofore referred to. Fig. 3 is a cross-section of theValve, taken on the line 3 3 of Fig. 2; and Fig.

4 is a cross-section of the valve, taken on the plane of the line 4 4 ofFig. 2.

A is the generator; B, the acid-chamber, preferably mounted or supportedby said gen- 4 5 erator, as shown.

O is a pipe forming a siphon connecting the acid-chamber with thegenerator.

D is the gas-pipe employed to convey the gas generated in A to theremaining parts of the apparatus not here necessary to be shown.

F is the outlet-valve for the gas, preferably located in the pipeconnecting the gas-pipe D with its discharge-vessel.

G is another gas-pipe leading from any convenient source of supplyas thecarbonatingcylinder-controlled by a valve H and communicating, as shown,with the acid-chamber B.

I is a vent-pipe controlled by a valve, as shown, useful for a purposehereinafter to be explained.

The check-valve is located in the siphon above the acid-chamber at J asshown in Fig. 1.

Referring to Figs. 2, 3, and 4, K and K are two sections of a leadlining capable of withstanding the corrosive action of the acid.

L is a glass valve-seat interposed between the sections K and K, seatinga ball M, preferably of glass,in its concave portion N. The object ofusing glass is to obtain a smooth seat and tight fit, together withmaterial which will withstand the corrosive action of the acid. Thesection K of the lead lining, as shown, is of greater diameter than theball M for a portion of its height, was to permit the movement of theball-valve M to and from its seat. This enlarged portion 0 at its upperend is provided with inwardlyprojecting ribs P, which afford a stop tothe upward movement of the ball M, while at the same time permitting theflow of acid through the passages Q.

The parts of the apparatus having been described, the operation is asfollows: The generator A having been charged with a proper supply ofcarbonate and water and the chamber B its supply of acid, the cock H isturned, permitting gas to flow into the top of the acidchamber, whichgas exerting pressure on the acid tends to cause its flow through thesiphon into the generator. When a sufficient quan- 9o tity of gas hasbeen admitted to the top of the chamber B to force the ball M from itsseat and cause the acid to flow through the pipe 0 into the generator,the valve H may be closed. The acid entering the generator A 5 andcombining chemically with the carbonate and water therein containedgenerates gas, as is well understood. Then the gas thus generatedbecomes equal or greater in pressure than the gas at the top of thechamber B, the zoo the ball M will be forced to its seat and thus thesupply of acid cut off. After the gas g erated in A has been withdrawnin quantity suflicient to reduce its pressure below that of the gas inthe chamber B the ball M will be raised from its seat and acid will flowas before, and the operation will be automatically continued until thechamber B is emptied of its acid. Should it be desired to let off any ofthe pressure from the acid-chamber, it can be done by means of thevent-valve I, thus permitting the acid to be retained in the acidchamberuntil required.

From the foregoing description it will readily be seen that an automaticfeed of the acid from the acid-chamber to the generator is obtainedwhich is both safe and reliable, it being impossible for too great asupply of acid to be conveyed to the generator, as increased acid-supplycauses increased pressure of gas

